Toga could be an ally. Since she has her own complex relationship with the idea of heroes and villains, she might find Deku's transformation interesting. She could provide some of her unique skills, like shape - shifting, to help Deku in his villainous plans. Additionally, Twice might also join them because of his loyalty to Toga and his own sense of being an outcast in the hero world.
Well, 'Fallen Hope' is one that stands out. It explores Deku's descent into villainy in a very compelling way, with lots of plot twists and character development.
In a Deku villain fanfic, perhaps Deku could form an alliance with some of the existing villains in the Boku no Hero Academia world. He might see potential in them that the heroes overlook. He could team up with Shigaraki, believing that together they could reshape the world into a more 'fair' place, according to his now - twisted view.
One interesting 'My Hero Academia Villain Deku' fanfiction could be where Deku turns villain due to being constantly bullied and rejected by society in the story. He might use his intelligence and knowledge of hero strategies against them. For example, he could form his own group of outcasts and start causing chaos in a very calculated way.
The characters would have a range of reactions. Some would be in disbelief. They have witnessed Deku's journey from a quirkless boy to a powerful hero - in - training. So, seeing him as a villain in a fanfiction would be like a complete 180 - degree turn. Midoriya's mother would be devastated. She has always supported her son, and to see him as a villain would go against everything she believed in. The teachers at U.A. would be concerned and start to analyze what could have led to this change. Maybe they would question their own teaching methods or if there were any signs they missed during Deku's time at the school.
It completely turns the narrative on its head. In the normal My Hero Academia story, Deku is the hero we root for. But in a Villain Deku fanfiction, it challenges all the values the story has been building. It makes us question the idea of heroism and what can drive a person to the opposite side. For example, if Deku becomes a villain, the relationships he has with other characters like his friends and mentors become strained and distorted.
One idea could be that Deku gets tired of being constantly underestimated and bullied despite his efforts to be a hero. So, he decides to use his knowledge of hero strategies against them and becomes a villain. He could form his own group of outcasts who were also treated unfairly in the hero - centered society.
Frustration could be a major motive. He has faced so much hardship in his journey to become a hero, from not having an initial quirk to being constantly put down. This built - up resentment could turn him into a villain.